DAELIM B-BONE

● Remove the valve and inspect the valve seat face.
● The valve seat contact should be within the specified
width and evenly all around the circumference.
If the valve seat width is not within specification,
reface the valve seat.
● Measure the valve seat width.
STANDARD VALUE : 0.8
-1.0 mm
SERVICE LIMIT : 1.4 mm
VALVE SEAT REFACING
● Reface the worn valve seat by using valve seat cutters
and grinders.
● Using a 45 degree cutter, remove any roughness or
irregularities from the seat.
● Using a 37 degree cutter, remove ¼ of the existing
valve seat material.
10-9
CYLINDER HEAD / VALVES
●Valve faces and stem tips cannot be ground. If a valve
face or stem tip is rough, worn unevenly, or contacts
the seat improperly, the valve must be replaced.
!
NOTE
△
● Follow the refacer manufactuer’s operating instructions.
● Reface the valve seat whenever the valve guide has been
replaced.
●Be careful not to grind the seat more than necessary.
!
NOTE
△
37
37
45
55
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
VALVE SEAT
ROUGHNESS